To be fair, you also need centre halves who are composed and smart enough to be in positions to receive it too. If the keeper is being closed down, then the chances are the angles are narrowing for the keeper to play it out - and the CB's or FB's need to help the keeper out. If they expect the keeper to do it all, then it'll fail even with Neuer!
It ought to be less work for the CB's and FB's to learn though, as they should already be decent with their feet, but that said, a fair few defenders aren't all that good under pressure when receiving the ball either. Some are born tacklers, and at their best when the opposition has the ball, less so when it's at their own feet.